Note: Javascript is disabled or is not supported by your browser. For this reason, some items on this page will be unavailable. For more information about this message, please visit this page:
About CDC.gov

The U.S. Bureau of Mines is conducting an ongoing research project to better understand the phenomena involved within electric arcs utilized in electric furnace steelmaking. With a better understanding of the physical and electrical characteristics involved, dynamic or predictive control of electric arc furnaces may be possible. A mathematical model is presented, but not solved, and the system of coupled equations is analyzed. Characteristic parameters are used to determine relative importance. In this manner, significant quantities are dermed. The parameters found to contribute little to the system of equations of motion are ignored. A resultant simplified system is identified, and directions for further study are indicated toward control of electric arc furnaces.

"The Bureau of Mines investigated the preheating of continuously fed, fragmented ferrous scrap charges by furnace offgases and the utilization of substitutes for imported fluorspar to condition electric steelmaking slags. Three types of continuous sc...

"Standard metering of electric arc furnaces usually uses root mean square (RMS) or true root mean square (TRMS) measurements for determining power. In order to obtain better signals for both monitoring and control, a study of instantaneous, RMS, and ...

"The Bureau of Mines has studied a number of processes to remove cu from molten steel scrap with the objective of determining if any of the laboratory methods studied warranted in-depth research investigations. Experimental approaches included oxidiz...

United States. Bureau of Mines.. Pittsburgh Mining and Safety Research Center..

Published:

1986

Series:

Report of investigations (United States. Bureau of Mines) ; 9029

Description:

"The Bureau of Mines is investigating the fundamental behavior of electric arcs in electric-furnace operations. The electric arc is a poorly understood phenomenon. If the arc in a steelmaking furnace can be more carefully controlled, it should be pos...